如何水平翻转UIImage？ [英] How to flip UIImage horizontally?

问题描述

如何横向翻转 UIImage ，我在 UIImage中找到 UIImageOrientationUpMirrored 枚举值类引用，如何使用此属性来翻转 UIImage 。

How to flip the UIImage horizontally, I found UIImageOrientationUpMirrored enumeration value in the UIImage class reference, how to make use of this property to flip UIImage.

推荐答案

UIImage* sourceImage = [UIImage imageNamed:@"whatever.png"];

UIImage* flippedImage = [UIImage imageWithCGImage:sourceImage.CGImage 
                                            scale:sourceImage.scale
                                      orientation:UIImageOrientationUpMirrored];

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